Graded-index multimode fiber and manufacturing method therefor

摘要

A graded-index multimode fiber (10) includes a core (12) made of silica glass, the core (12) having a central region (16) and an outer peripheral region (18), and a cladding (20) which is provided at an outer periphery of the core (12). The central region contains (16) one of germanium and phosphorus, and the outer peripheral region (18) contains fluorine. <IMAGE>